2.CLINICAL RESEARCH OF MALIGNANT PERIPHERAL NERVE SHEATH TUMOR(36 CASES REPORT)
Tiansheng YE ; Xifeng ZHANG ; Ya WANG
Medical Journal of Chinese People's Liberation Army 2001;0(08):-
head and neck region. Postoperative recurrence rate was 42 10%, five year survival rate was 8 33%. Not a single case was found to be malignant degeneration of neurolemmoma or neurofibromatosis, nor as a result of radiotherapy. It is suggested that MNST is a primary soft tissue malignant tumor, and early complete excision is the key treatment. The biological characteristics of this tumor as revealed in this study suggest that it is different from what was reported in the foreign literature.
3.Effect of arthrolysis on scapulohumeral periarthritis
Chinese Journal of Rehabilitation Theory and Practice 2004;10(7):434-434
Objective To investigate the value of arthrolysis in treatment of scapulohumeral periarthritis.Methods 83 cases of scapulohumeral periarthritis were divided into arthrolysis group(45 cases), which were treated with arthrolysis combined with electrotherapy, and control group (38 cases),which were treated with electrotherapy only.Results The effect of arthrolysis group was better than that of control group (P<0.05).Conclusion Arthrolysis can improve the effect on scapulohumeral periarthritis.
4.Glass Chips for Capillary Electrophoresis: Micromachining,Sample Injection and Separation
Yanghua TANG ; Xiongying YE ; Zhaoying ZHOU ; Yanying FENG ; Ya JIN
Chinese Journal of Analytical Chemistry 2001;29(5):606-610
Micromachining of capillary electrophoresis chips is described.The current in channels was determined versus the voltage applied on the chip.Using laser-induced fluorescence detection,the process of injection and separation on chips was recorded with charge-coupled device(CCD).With defferent voltge of reservoirs on glass chips,profiles of the sample plug were studied. The elctropherogram of hydrolysis product of fluorescein isothiocyanate (FTTC-OH) and arginine labeled by fluorescein isothiocyante(FTTC-Arg) was obtained.
5.Study on the time of amounted to peak of human adipose-derived stromal cells differentiation into neural precursor cells in vitro
Yanan CAI ; Xiaodong YUAN ; Ya OU ; Changqing YE ; Hui LIU
Chinese Journal of Behavioral Medicine and Brain Science 2011;20(4):302-305
Objective To reseach the time point of the highest percentage of neural precursor cells derived from adipose stromal cells (ADSCs) in vitro, and to observe the ultrastructure features of neural precursor cells. Methods Used the β-mercaptoethanol to induce ADSCs to differentiate into neural precursor cells and neuron-like cells. The morphology of the uninductedcells and inducted cells were observed with inverted phase contrast microscope. The expression of nestin which was the marker of neural precursor cell in each group was detected using immunofluorescence staining method. The ultrastructural feature of cells which was induced for 3 hours were observed. Results The highest ratio of positive expression of nestin was 3 hours following induction,with the ratio ( 86.25 ± 4.82) %. There were many protuberance on the cell membrane under transmission electron microscopy.There were plenty of organelles in the neural precursor cells. The neural precursor cells had a large size nucleus,large nucleoplasmic index, much extended chromatin,and less condensed chromatin. The nucleus had double-layer nuclear envelope, more nuclear pore on the nuclear envelope. Conclusion The time point of the highest percentage of neural precursor cells derived from ADSCs is 3 hours,and the ultrastructral feature of induced neural precursor cells confirm that cells at this time point are in a state of split active period.
6.Adult adipose-derived stem cells differentiation into a astrocyte cells morphology and ultrastructure in vitro
Hui LIU ; Xiaodong YUAN ; Changqing YE ; Ya OU ; Yanan CAI
Chinese Journal of Behavioral Medicine and Brain Science 2010;19(7):617-620
Objective To induce adult adult adipose-derived stem cells(ADSCs) in vitro to differentiate into neuronal-like cells,and to analyze the features of their cell morphology and ultrastructure. Methods Adipose stromal cells were obtained and amplified in vitro. Then make use of chemical induction to induce them. Observed ADSC and differentiation of cells in morphology and ultrastructure under inverted microscope and transmission electron microscopy. Immunocytochemistry to detection of Nestin, Neuron Specific Endolase( NSE) ,and glial fibrillary acidic protein(GFAP) expression in cells. Used Real-time PCR to detection of Nestin,GFAP gene mRNA expression before and after induction in ADSC. To observe the morphology and ultrastructure of the cells prior to and after induction under microscope and electron microscope. Results The morphology of ADSC was similar to fibroblasts ,and could be amplified stability within 10 passages in vitro. Some of the cells induced display a typical astrocyte-like cells in ultrastructure. Followed neuronal induction,astrocyte-like cells began to stain brightly for CFAP, Nestin. GFAP stained in both the cytoplasm and nuclei of astrocyte-like cells, but Nestin only stained in the cytoplasm. The peak positive expression rate within 14d following neuronal induction. The rate of positive expression cells was( 14.4 ± 3. 6) % for Nestin, (87. 3 ± 5. 3 ) % for GFAP. Then two kinds of protein expression remained the similar rate. The average relative concentration of GFAP and Nestin gene mRNA have significant statistical difference between ADSC and differented cells analyzed by Real-time PCR (P<0.05).The peak concentration of GFAP was within 20 d after induction,and GFAP was within 14 d after induction. Conclusion In the cytoplasm of adult adipose-derived cells possess Nestin genetic material,which is the marker of neural stem cell. The differential astrocyte-like cells have the typical morphology, ultrastructure and GFAP phenotype of mature astrocytes.